Powertrain, generic (extended)

P2E89 Proximity Detection Circuit B Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E89 stands for a voltage on proximity circuit B below the band the controller accepts in a state where no plug can be present. The rule for circuit A shows how this is judged: GM's Volt checks the line with the charge door closed or while driving out of Park and sets P0D58 below 4.2 V, in 2011 after 30 failures out of 50, in the 2019 tables after 240 out of 400 samples above 20 km/h, as a Type A code with MIL. Mitsubishi's 2023 Outlander PHEV sets P0D58-00 on a low input of the charger connection signal and checks the line to the PHEV-ECU for a ground short, the charging cable and even outside supply equipment. No manufacturer documents P2E89 itself. A Lear patent protects the 5 V feed of such circuits against shorts. Expect a car that believes a plug is in.

Likely causes

Proximity line of circuit B chafed and shorted to ground
Water or dirt in inlet B bridging the contact to earth
Defective charging cable left in the inlet
Input stage in the evaluating control unit damaged

Symptoms

  • Message that a charging cable is connected although none is
  • Vehicle cannot be put into drive mode
  • Warning lamp, depending on manufacturer the MIL

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–1,000
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

proximity detection bcharge inlet bwiring harness

Related codes

P2E87P2E88P2E8AP2E8BP0D58

References: gsi.ext.gm.com, gsi.ext.gm.com, mitsubishitechinfo.com, image-ppubs.uspto.gov.